<template>
  <div>
    <!--面包屑导航区域-->
    <el-breadcrumb separator-class="el-icon-arrow-right">
      <el-breadcrumb-item :to="{ path: '/home' }">首页</el-breadcrumb-item>
      <el-breadcrumb-item>用户管理</el-breadcrumb-item>
      <el-breadcrumb-item>用户列表</el-breadcrumb-item>
    </el-breadcrumb>

    <!--卡片视图区域-->
    <el-card>
      <!--搜素与添加区域-->
      <el-row :gutter="20">
        <el-col :span="8">
          <el-input
            placeholder="请输入内容"
            v-model="queryInfo.query"
            clearable
            @clear="getUserList"
          >
            <el-button slot="append" icon="el-icon-search" @click="getUserList" />
          </el-input>
        </el-col>
        <el-col :span="4">
          <el-button type="primary" @click="addDialogVisible = true">添加用户</el-button>
        </el-col>
      </el-row>

      <!--添加用户的对话框-->
      <el-dialog
        title="添加用户"
        :visible.sync="addDialogVisible"
        width="50%"
        @close="addDialogClosed"
      >
        <!--内容主体表单区域-->
        <el-form
          :model="addForm"
          :rules="addFormRules"
          ref="addFormRef"
          label-width="70px"
        >
          <el-form-item label="用户名" prop="username">
            <el-input v-model="addForm.username" />
          </el-form-item>
          <el-form-item label="密码" prop="password">
            <el-input v-model="addForm.password" />
          </el-form-item>
          <el-form-item label="邮箱" prop="email">
            <el-input v-model="addForm.email" />
          </el-form-item>
          <el-form-item label="手机" prop="mobile">
            <el-input v-model="addForm.mobile" />
          </el-form-item>
        </el-form>
        <!--底部区域-->
        <span slot="footer" class="dialog-footer">
          <el-button @click="addDialogVisible = false">取 消</el-button>
          <el-button type="primary" @click="addUser">确 定</el-button>
        </span>
      </el-dialog>

      <!--修改用户对话框-->
      <el-dialog
        title="修改用户"
        :visible.sync="editDialogVisible"
        width="50%"
        @close="editDialogClosed"
      >
        <el-form
          :model="editForm"
          :rules="editFormRules"
          ref="editFormRef"
          label-width="70px"
        >
          <el-form-item label="用户名">
            <el-input v-model="editForm.username" disabled />
          </el-form-item>
          <el-form-item label="邮箱" prop="email">
            <el-input v-model="editForm.email" />
          </el-form-item>
          <el-form-item label="手机" prop="mobile">
            <el-input v-model="editForm.mobile" />
          </el-form-item>
        </el-form>
        <span slot="footer" class="dialog-footer">
          <el-button @click="editDialogVisible = false">取 消</el-button>
          <el-button type="primary" @click="editUserInfo">确 定</el-button>
        </span>
      </el-dialog>

      <!--分配角色的对话框-->
      <el-dialog
        title="分配角色"
        :visible.sync="setRoleDialogVisible"
        width="50%"
        @close="setRoleDialogClosed"
      >
        <div>
          <p>当前的用户：{{ userInfo.username }}</p>
          <p>当前的角色：{{ userInfo.role_name }}</p>
          <p>
            分配新角色：
            <el-select v-model="selectedRoleId" placeholder="请选择">
              <el-option
                v-for="item in rolesList"
                :key="item.id"
                :label="item.roleName"
                :value="item.id"
              />
            </el-select>
          </p>
        </div>
        <span slot="footer" class="dialog-footer">
          <el-button @click="setRoleDialogVisible = false">取 消</el-button>
          <el-button type="primary" @click="saveRoleInfo">确 定</el-button>
        </span>
      </el-dialog>
      <!--用户列表区域-->
      <el-table :data="userlist" border stripe>
        <el-table-column type="index" label="#" />
        <el-table-column label="姓名" prop="username" />
        <el-table-column label="邮箱" prop="email" />
        <el-table-column label="电话" prop="mobile" />
        <el-table-column label="角色" prop="role_name" />
        <el-table-column label="状态">
          <template slot-scope="scope">
            <el-switch
              v-model="scope.row.mg_state"
              @change="userStateChanged(scope.row)"
            />
          </template>
        </el-table-column>
        <el-table-column label="操作" width="180px">
          <template slot-scope="scope">
            <!--修改按钮-->
            <el-button
              type="primary"
              icon="el-icon-edit"
              size="mini"
              @click="showEditDialog(scope.row.id)"
            />
            <!--删除按钮-->
            <el-button
              type="danger"
              icon="el-icon-delete"
              size="mini"
              @click="removeUserById(scope.row.id)"
            />
            <!--分配角色按钮-->
            <el-tooltip
              effect="dark"
              content="分配角色"
              placement="top"
              :enterable="false"
            >
              <el-button
                type="warning"
                icon="el-icon-setting"
                size="mini"
                @click="setRole(scope.row)"
              />
            </el-tooltip>
          </template>
        </el-table-column>
      </el-table>

      <!--分页区域-->
      <el-pagination
        @size-change="handleSizeChange"
        @current-change="handleCurrentChange"
        :current-page="queryInfo.pagenum"
        :page-sizes="[1, 2, 3, 4]"
        :page-size="queryInfo.pagesize"
        layout="total, sizes, prev, pager, next, jumper"
        :total="total"
        background
      >
      </el-pagination>
    </el-card>
  </div>
</template>

<script>
export default {
  name: "Users",
  data() {
    //验证邮箱规则
    const checkEmail = (rule, value, cb) => {
      //验证邮箱的正则表达式
      const regEmail = /^([a-zA-Z0-9_-])+@([a-zA-Z0-9_-])+(\.[a-zA-Z0-9_-])+/;
      if (regEmail.test(value)) {
        //合法的邮箱
        return cb();
      }
      cb(new Error("请输入合法的邮箱"));
    };
    //验证手机规则
    const checkMobile = (rule, value, cb) => {
      //验证手机号的正则表达式
      const regMobile = /^(0|86|17951)?(13[0-9]|15[0123456789]|17[678]|18[0-9]|14[57])[0-9]{8}$/;
      if (regMobile.test(value)) {
        //合法的邮箱
        return cb();
      }
      cb(new Error("请输入合法的手机号"));
    };
    return {
      //获取用户列表的参数对象
      queryInfo: {
        query: "",
        //当前得页数
        pagenum: 1,
        //当前每页显示多少条数据
        pagesize: 2,
      },
      userlist: [],
      total: 0,
      //控制对话框的显示和隐藏
      addDialogVisible: false,
      addForm: {
        //添加用户的表单数据
        username: "",
        password: "",
        email: "",
        mobile: "",
      },
      addFormRules: {
        //添加表单的验证规则
        username: [
          { required: true, message: "请输入用户名!", trigger: "blur" },
          { min: 3, max: 10, message: "长度在 3 到 10 个字符", trigger: "blur" },
        ],
        password: [
          { required: true, message: "请输入密码!", trigger: "blur" },
          { min: 6, max: 15, message: "长度在 6 到 15 个字符", trigger: "blur" },
        ],
        email: [
          { required: true, message: "请输入邮箱!", trigger: "blur" },
          { validator: checkEmail, trigger: "blur" },
        ],
        mobile: [
          { required: true, message: "请输入手机号!", trigger: "blur" },
          { validator: checkMobile, trigger: "blur" },
        ],
      },
      //控制修改对话框的显示和隐藏
      editDialogVisible: false,
      //查询到的用户信息对象
      editForm: {},
      editFormRules: {
        email: [
          { required: true, message: "请输入用户邮箱!", trigger: "blur" },
          { validator: checkEmail, trigger: "blur" },
        ],
        mobile: [
          { required: true, message: "请输入手机号!", trigger: "blur" },
          { validator: checkMobile, trigger: "blur" },
        ],
      },
      // 控制分配角色对话框的显示和隐藏
      setRoleDialogVisible: false,
      // 需要被分配角色的用户信息
      userInfo: {},
      // 所有角色的数据列表
      rolesList: [],
      // 已选择角色的Id值
      selectedRoleId: "",
    };
  },
  created() {
    this.getUserList();
  },
  methods: {
    async getUserList() {
      const { data: res } = await this.$http.get("users", { params: this.queryInfo });
      if (res.meta.status !== 200) {
        return this.$message.error("获取用户列表失败!");
      }
      this.userlist = res.data.users;
      this.total = res.data.total;
      // console.log(res.data);
    },
    //监听 pagesize 改变事件
    handleSizeChange(newSize) {
      //console.log(newSize);
      this.queryInfo.pagesize = newSize;
      this.getUserList();
    },
    //监听页码值得改变事件
    handleCurrentChange(newPage) {
      //console.log(newPage);
      this.queryInfo.pagenum = newPage;
      this.getUserList();
    },
    //监听switch开关状态的改变
    async userStateChanged(userinfo) {
      //console.log(userinfo);
      const { data: res } = await this.$http.put(
        `users/${userinfo.id}/state/${userinfo.mg_state}`
      );
      if (res.meta.status !== 200) {
        userinfo.mg_state = !userinfo.mg_state;
        return this.$message.error("更新用户状态失败！");
      }
      this.$message.success("更新用户状态成功！");
    },
    //监听添加用户对话框的关闭事件
    addDialogClosed() {
      this.$refs.addFormRef.resetFields();
    },
    //点击按钮，添加新用户
    addUser() {
      this.$refs.addFormRef.validate(async (valid) => {
        // console.log(valid);
        if (!valid) return;
        //可以发起添加用户的网络请求
        const { data: res } = await this.$http.post("users", this.addForm);
        if (res.meta.status !== 201) {
          this.$message.error("添加用户失败!");
        }
        this.$message.success("添加用户成功!");
        //隐藏添加用户对话框
        this.addDialogVisible = false;
        //重新获取用户列表
        this.getUserList();
      });
    },
    //展示编辑用户的对话框
    async showEditDialog(id) {
      const { data: res } = await this.$http.get("users/" + id);
      if (res.meta.status !== 200) {
        return this.$message.error("查询用户信息失败!");
      }
      this.editForm = res.data;
      this.editDialogVisible = true;
    },
    //监听修改用户对话框的关闭事件
    editDialogClosed() {
      this.$refs.editFormRef.resetFields();
    },
    //修改用户信息并提交
    editUserInfo() {
      this.$refs.editFormRef.validate(async (valid) => {
        if (!valid) return;
        //发起修改用户的网络请求
        const { data: res } = await this.$http.put("users/" + this.editForm.id, {
          email: this.editForm.email,
          mobile: this.editForm.mobile,
        });
        if (res.meta.status !== 200) {
          this.$message.error("更新用户失败!");
        }
        //关闭对话框
        this.editDialogVisible = false;
        //刷新数据列表
        this.getUserList();
        //提示修改成功
        this.$message.success("更新用户成功!");
      });
    },
    // 根据Id删除对应的数据
    async removeUserById(id) {
      // console.log(id);
      // 弹框询问用户是否删除数据
      const confirmRes = await this.$confirm(
        "此操作将永久删除该用户, 是否继续?",
        "提示",
        {
          confirmButtonText: "确定",
          cancelButtonText: "取消",
          type: "warning",
        }
      ).catch((err) => err);

      // 如果用户确认删除，则返回字符串 confirm
      // 如果取消了删除，则返回字符串 cancel
      // console.log(confirmRes);
      if (confirmRes !== "confirm") {
        return this.$message.info("已取消删除");
      }
      // console.log('确认删除');
      const { data: res } = await this.$http.delete("users/" + id);
      if (res.meta.status !== 200) {
        return this.$message.error("删除用户失败！");
      }
      this.$message.success("删除用户成功！");
      this.getUserList();
    },
    // 展示分配角色的对话框
    async setRole(userInfo) {
      this.userInfo = userInfo;
      // 在展示对话框之前获取所有角色列表
      const { data: res } = await this.$http.get("roles");
      if (res.meta.status !== 200) {
        return this.$message.error("获取角色列表失败!");
      }
      this.rolesList = res.data;
      // console.log(this.rolesList);
      this.setRoleDialogVisible = true;
    },
    // 点击按钮，分配角色
    async saveRoleInfo() {
      if (!this.selectedRoleId) {
        return this.$message.warning("请选择要分配的角色!");
      }
      const { data: res } = await this.$http.put(`users/${this.userInfo.id}/role`, {
        rid: this.selectedRoleId,
      });
      if (res.meta.status !== 200) {
        return this.$message.error("更新角色失败！");
      }
      this.$message.success("更新角色成功！");
      this.getUserList();
      this.setRoleDialogVisible = false;
    },
    // 监听分配角色对话框的关闭事件
    setRoleDialogClosed() {
      this.selectedRoleId = "";
      this.userInfo = {};
    },
  },
};
</script>

<style lang="less" scoped></style>
